[PATCH 3.4 011/146] drm/radeon: fix doublescan modes (v2)

[lizf]

From: Alex Deucher <alexander.deucher@xxxxxxx>

3.4.109-rc1 review patch.  If anyone has any objections, please let me know.

------------------


commit fd99a0943ffaa0320ea4f69d09ed188f950c0432 upstream.

Use the correct flags for atom.

v2: handle DRM_MODE_FLAG_DBLCLK

Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Zefan Li <lizefan@xxxxxxxxxx>
---
 drivers/gpu/drm/radeon/atombios_crtc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index d51c08d..af6790c 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -318,8 +318,10 @@ atombios_set_crtc_dtd_timing(struct drm_crtc *crtc,
 		misc |= ATOM_COMPOSITESYNC;
 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 		misc |= ATOM_INTERLACE;
-	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
 		misc |= ATOM_DOUBLE_CLOCK_MODE;
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		misc |= ATOM_H_REPLICATIONBY2 | ATOM_V_REPLICATIONBY2;
 
 	args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
 	args.ucCRTC = radeon_crtc->crtc_id;
@@ -362,8 +364,10 @@ static void atombios_crtc_set_timing(struct drm_crtc *crtc,
 		misc |= ATOM_COMPOSITESYNC;
 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 		misc |= ATOM_INTERLACE;
-	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+	if (mode->flags & DRM_MODE_FLAG_DBLCLK)
 		misc |= ATOM_DOUBLE_CLOCK_MODE;
+	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+		misc |= ATOM_H_REPLICATIONBY2 | ATOM_V_REPLICATIONBY2;
 
 	args.susModeMiscInfo.usAccess = cpu_to_le16(misc);
 	args.ucCRTC = radeon_crtc->crtc_id;
-- 
1.9.1

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